Hide the Side and Bottom Frames on the Generator

I just found out about this site and it's amazing! one thing that bothers me is the frames in the side and bottom of the site, I don't mind the header but the frame reducing the view area, especially on mobile screens. I'm still new to this site so I don't know for sure whether I can hide the frame or not and there are no customization options anywhere on the site. I'm not sure what the specific purpose for it but I would suggest removing it and leaving just the header.